Brake-shoe.



No. 817,541. PATENTEDAPR. 10, 1906. G. W. ARMBRUST,

BRAKE SHOE.

APPLICATION FILED NOV.9,1905.

@HAELES W. ARMBRUST. OF CHICAGO, iLLlNOlS.

enem s-sore eraser.

specification of Letters Patent.

Patented. April 10, 1986.

Application iiisgl November 9, 1905. Serial No. 286.671,

entire thickness of too body or operative portion of the shoe may be used up Without breaking connection to the head, thus broiding an economical form of shoe inwliich there is orecticelly no waste. 7

Another object of the invention is to croisle e construction Which prevents broizen ports or ortions from dropping to the trsc Anots. ect of the invention is to sepee rate the shoe proper from the hearisuhiciently to evoi i zisnger of Wearing into the head even though the shoe weer unevenly Still another object of the invention is to cause occidental breakage of the shoe to occur at predetermined point Where such breakage is immaterial, thereby lessening the likelihood of breakage st material points.

M r invention is illustrated in the accompanyin drawings, in Which Figure 1 is a side elevetionel view showing the invention in one form. View from the outer or book Fig. 3 is longitudinal section showing a slightly different form of inner retaininglugs, and e is a cross-sectional view on the line 3.

Referring to the drawings, 5 may designate the brake-heed, in the usual standard form,

Fig. 2 is a plan side of the shoe.

having the forked ends 6 and the interniedi-' etc inner spcrturecl lugs 7.

8 designates the trend or body portion of the shoe. the beck of the shoe-body 8 are cast integrally therewith a series of members designed to cooperate with head in guiding and nolrlnig the shoe reistively to the head and also in spacing the shoe from the head, so that the former may be entirely used up and Worn out without danger of Wearing or injuring the head. Referring to these members more particularly, 9 designates each of e peir oi filling and spacing lu s on opoos curls of the outer side or the r 111,833 9 we cost apertures fastening-lugs or keepers 10, receiving the key 11. On the filling members 9 inivsr of the keepers i0 is cast 2. guide-lug 12,,vvli1cilies between the forked ends 6 the head thus preventing relative lateral displacement between the head and shoe On the intermediate port of the outer s of the shoe is cast pair of filling and spoon lugs 13, on which rest the inner ends of ting lugs or keepers 14, through which the key 11 passes. it Will be observed that the nlhng or s ecing projections 9 and 13 on the heel:

of t e shoe perform the important function I of separating the shoe-engsing members of the head from the normal heck line of shoe, so that the body of the shoe proper may be entirely Worn out in service, While still leaving the spacing and filling lugs to pro we the head against weer, even should the be Worn unevenly that is, more on one or at one end then the other.

A brake-shoe made in e single piece some times Wears unevenly and is often subjected to strains tending to break the some transversely by reason of lack of support at the ends and intermediate parts of the head.

*o remedy these conditions, it has heretoio been proposed to make the shoe in two longs tudinol halves.

My invention contemplates the use of :1 sin gle integral shoe, but so constructed as to cause any transverse creel: which insy occur to telre place centrally of the shoe in order to prevent the shoe from breaking at other points and to give the separated ports a sub stsntiolly uniform and equal support upon the head. For this purpose the intermediate opertured lugs or keepers i i are seperzi-ted by e iflsliapecispece, (indicated at 15,) which extends substantially to the line of the book of the shoe, and the two sides and face of the shoe are transversely scored, as indicated at 16 and 17, respectively, to render that point the Weakest point of the shoe. The fern J tion of the shoe in a single niece reduces the number of parts to be handled in the essernbling of the shoe on the hood.

in order to prevent possible dropping or dislocation oi" the parts of the shoe in case ct breakage, i prefereblycost on the back the shoe, between the filling and spscingnienibers 9 and 13, epertured lugs or keepers 18, the outerends or" which nrei'ersbly extend tOWiMl the inner face of the heed, as shown, the key 11 passing through sect; this lugs 7 of the heed and also spcrtured iestena I i. ave shown a modification oi inner keepers, wherein these parts comprise 18", notched on their outer ends to receive the key 11, these lugs being set farther out toward and on their outer surface iitting the inner end portions of the head.

it is evident that variations and modifica- E3 in respect to the details of structure n. the invention as described and shown may be made by those skilled in the art with out departing from the principle of the inven tion or sacrificin any of the advantages thereof. Hence t 1e invention is not limited to the particular embodimentsthere of selected for purposes of illustration and description.

1 claim 1. A separable brake-shoe rovided with spacing and fillin means on t e back thereor to engage the ead, said means allowing the shocbody to be entirely Worn out Without danger of wearing the head even under uneven wear of the shoe, substantially as described.

2. A separable brake-shoe provided with spacing and filling in s on .the back thereof to engage the head, sai in s being of sufficient thickness to protect the cad against contact with the wheel after the shoe-body proper been entirely worn away even under wear of the latter, substantially as described.

'3. A separable brake-shoe provided with spacing and filling lugs projecting beyond t. e back line of the shog a'sufiicient distance to protect the head against wear even under uneven wear of the shoe, and further provided with one or more apertured lugs on said spacing and filling lugs for the pur ose of connection with the head, substantial y as described. i

i. The combination with a head having one or more apertured lugs on the face thereof adjacent to the brake-shoe, of a brakeshoe havin spacing and filling lugs between the back 0' the shoe and the head of sufficient thickness to permit the shoe-body to be entirely worn out without danger of wearing the head even under uneven Wear of the shoe, one or more apertured lugs on said spacing and filling lugs, and a key engaging said apertured lugs of the head and shoe, substantially as described. Y

5. The combination with a head having forkedends and one or more apertured lugs on the face thereof adjacent to the brake shoe, of a brake-shoe having integral spacing e brake-shoe, ofa brakeand filling lugs between the back of the shoe and the head, said brake-shoe also having on its back integral apertured lugs andvuide lugs engaging the forked ends of the dead, and a key engagingsaid aperture-d lugs oi the head and shoe, substantially as described.

7. A separable brake-shoe transversely weakened at a point between its ends, eubstantially as and for the purpose described.

8. A separable brake shoe transversely scored at a point intermediate its ends, substantially as and for the purpose described.

9. A separable brakeshoe transversely weakened at its longitudinal center, substantially as and "for the purpose described.

10. The combination with a head, of a brake-shoe separably connected thereto, said brake-shoe being transversely weakened at a point between its ends, substantially as and for the purpose described.

11. The combination with a head, of a brake-shoe separably connected thereto, said brake-shoe being transversely weakened at its central part, substantially as and for the purpose described.

12. The combination with a head, of a brake-shoe separablvconnected at each end i to the head, said brake-shoe being transversely scored at its central part, substantially as and for the purpose described.

13. The combination with a head, of a brake-shoe separably connected to the head, said brake-shoe having filling and spacing lugs between its back and the adjacent face or" the head and bein transversely weakened at its central part, substantially as described.

14. The combination with a head, of a brake-shoe having on each longitudinal half thereoi a plurality of devices whereby it is separably connected to the head, saidbrakeshoe being transversely scored at its central part, substantially as and for the purpose described.

15. A brake-shoe havin on its back a keeper for each outer end 0 the shoe, a-pair of central keepers, and a keeper disposed be tween the central keepers and the-end keepers, substantially as described.

16. A separable brake-shoe provided with spacing and filling lugs projecting beyond the .back line of the shoe sufficiently to permit the shoe-body to be entirely worn out without danger of Wearing the head even i i'idel uneven Wear of they sho with one or more :1

tion with the head.

17. A se arable.

brake-S.

spacing an filling lugs pro aok'line of the'sh the head, and further provided with one or more apertured lugs on the back of the shoebody and on said the purpose of me and stantiali y as described.

e, and flirthe; pertured lugs on of the shoe-hody forthe purpose of connecezmei spacing and fillies back hne of the s;

provided the back I more apertured lu 0y 1'0 erfort hoe provided with with t e ead, subs jecting beyond the 19. A brake-shoe adapted to engage tening lugs.

lugs eoiin' oe and adapt I the head, and further provided mt s on the back of or more combined speeing, guiding e purpose of connection tentiefiv as having 011 its CHARLES W;

spec:' and filling lugs for connecti d with the head, sub- Witnesses:

o I SAMUEL N. POND. l8.-A separab1e brake-shoe provided with MATTE B. B

LESS. 

